android完美实现 拍照 选择图片 剪裁等代码分享

 intent = new Intent(Intent.ACTION_GET_CONTENT);       intent.setType("image/*");       startActivityForResult(intent, GALLERY_REQUEST_CODE);

 intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);       startActivityForResult(intent, CAMERA_REQUEST_CODE);

 private static int CAMERA_REQUEST_CODE = 1; private static int GALLERY_REQUEST_CODE = 2; private static int CROP_REQUEST_CODE = 3; @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) {   if (requestCode == CAMERA_REQUEST_CODE) {     if (data == null) {       return;     } else { //拍照       Bundle extras = data.getExtras();       if (extras != null) {         Bitmap bm = extras.getParcelable("data");         Uri uri = saveBitmap(bm);         startImageZoom(uri);       }     }   } else if (requestCode == GALLERY_REQUEST_CODE) {     if (data == null) {//相册       return;     }     Uri uri;     uri = data.getData();     Uri fileUri = convertUri(uri);     startImageZoom(fileUri);   } else if (requestCode == CROP_REQUEST_CODE) {     if (data == null) {       return;     }//剪裁后的图片     Bundle extras = data.getExtras();     if (extras == null) {       return;     }     Bitmap bm = extras.getParcelable("data");     ShowImageView(bm);   } }

private Uri convertUri(Uri uri) {    InputStream is = null;    try {      is = getContentResolver().openInputStream(uri);      Bitmap bitmap = BitmapFactory.decodeStream(is);      is.close();      return saveBitmap(bitmap);    } catch (FileNotFoundException e) {      e.printStackTrace();      return null;    } catch (IOException e) {      e.printStackTrace();      return null;    }  }

private Uri saveBitmap(Bitmap bm) {    File tmpDir = new File(Environment.getExternalStorageDirectory()        + "/xiaoxin");    if (!tmpDir.exists()) {      tmpDir.mkdir();    }    File img = new File(tmpDir.getAbsolutePath() + "love.png");    try {      FileOutputStream fos = new FileOutputStream(img);      bm.compress(Bitmap.CompressFormat.PNG, 85, fos);      fos.flush();      fos.close();      Toast.makeText(MainActivity.this, "成功了", Toast.LENGTH_SHORT).show();      return Uri.fromFile(img);    } catch (FileNotFoundException e) {      Toast.makeText(MainActivity.this, "失了", Toast.LENGTH_SHORT).show();      e.printStackTrace();      return null;    } catch (IOException e) {      e.printStackTrace();      Toast.makeText(MainActivity.this, "失了", Toast.LENGTH_SHORT).show();      return null;    }  }

/**   * 剪裁图片   *    * @param uri   */  private void startImageZoom(Uri uri) {    Intent intent = new Intent("com.android.camera.action.CROP");    intent.setDataAndType(uri, "image/*");    intent.putExtra("crop", "true");    intent.putExtra("aspectX", 1);    intent.putExtra("aspectY", 1);    intent.putExtra("outputX", 150);    intent.putExtra("outputY", 150);    intent.putExtra("return-data", true);    startActivityForResult(intent, CROP_REQUEST_CODE);  }

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"  package="com.cogent.piccut"  android:versionCode="1"  android:versionName="1.0" >   <uses-sdk android:minSdkVersion="10" />   <application    android:icon="@drawable/ic_launcher"    android:label="@string/app_name" >    <activity      android:label="@string/app_name"      android:name=".PicCutActivity"      android:screenOrientation="portrait" >      <intent-filter >        <action android:name="android.intent.action.MAIN" />         <category android:name="android.intent.category.LAUNCHER" />      </intent-filter>    </activity>  </application> </manifest>

package com.cogent.piccut;import java.io.File;import java.text.SimpleDateFormat;import java.util.Date;import android.app.Activity;import android.app.AlertDialog;import android.content.DialogInterface;import android.content.Intent;import android.graphics.Bitmap;import android.graphics.drawable.BitmapDrawable;import android.graphics.drawable.Drawable;import android.net.Uri;import android.os.Bundle;import android.os.Environment;import android.provider.MediaStore;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.ImageButton;public class PicCutActivity extends Activity implements OnClickListener {  private ImageButton img_btn;  private Button btn;  private static final int PHOTO_REQUEST_TAKEPHOTO = 1;// 拍照  private static final int PHOTO_REQUEST_GALLERY = 2;// 从相册中选择  private static final int PHOTO_REQUEST_CUT = 3;// 结果  // 创建一个以当前时间为名称的文件  File tempFile = new File(Environment.getExternalStorageDirectory(),getPhotoFileName());  /** Called when the activity is first created. */  @Override  public void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.main);    init();  }  //初始化控件  private void init() {    img_btn = (ImageButton) findViewById(R.id.img_btn);    btn = (Button) findViewById(R.id.btn);        //为ImageButton和Button添加监听事件    img_btn.setOnClickListener(this);    btn.setOnClickListener(this);  }  //点击事件  @Override  public void onClick(View v) {    // TODO Auto-generated method stub    switch (v.getId()) {    case R.id.img_btn:      showDialog();      break;    case R.id.btn:      showDialog();      break;    }  }    //提示对话框方法  private void showDialog() {    new AlertDialog.Builder(this)        .setTitle("头像设置")        .setPositiveButton("拍照", new DialogInterface.OnClickListener() {          @Override          public void onClick(DialogInterface dialog, int which) {            // TODO Auto-generated method stub            dialog.dismiss();            // 调用系统的拍照功能            Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);            // 指定调用相机拍照后照片的储存路径            intent.putExtra(MediaStore.EXTRA_OUTPUT,Uri.fromFile(tempFile));            startActivityForResult(intent, PHOTO_REQUEST_TAKEPHOTO);          }        })        .setNegativeButton("相册", new DialogInterface.OnClickListener() {          @Override          public void onClick(DialogInterface dialog, int which) {            // TODO Auto-generated method stub            dialog.dismiss();            Intent intent = new Intent(Intent.ACTION_PICK, null);            intent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,"image/*");            startActivityForResult(intent, PHOTO_REQUEST_GALLERY);          }        }).show();  }  @Override  protected void onActivityResult(int requestCode, int resultCode, Intent data) {    // TODO Auto-generated method stub    switch (requestCode) {    case PHOTO_REQUEST_TAKEPHOTO:      startPhotoZoom(Uri.fromFile(tempFile), 150);      break;    case PHOTO_REQUEST_GALLERY:      if (data != null)        startPhotoZoom(data.getData(), 150);      break;    case PHOTO_REQUEST_CUT:      if (data != null)         setPicToView(data);      break;    }    super.onActivityResult(requestCode, resultCode, data);  }  private void startPhotoZoom(Uri uri, int size) {    Intent intent = new Intent("com.android.camera.action.CROP");    intent.setDataAndType(uri, "image/*");    // crop为true是设置在开启的intent中设置显示的view可以剪裁    intent.putExtra("crop", "true");    // aspectX aspectY 是宽高的比例    intent.putExtra("aspectX", 1);    intent.putExtra("aspectY", 1);    // outputX,outputY 是剪裁图片的宽高    intent.putExtra("outputX", size);    intent.putExtra("outputY", size);    intent.putExtra("return-data", true);    startActivityForResult(intent, PHOTO_REQUEST_CUT);  }  //将进行剪裁后的图片显示到UI界面上  private void setPicToView(Intent picdata) {    Bundle bundle = picdata.getExtras();    if (bundle != null) {      Bitmap photo = bundle.getParcelable("data");      Drawable drawable = new BitmapDrawable(photo);      img_btn.setBackgroundDrawable(drawable);    }  }  // 使用系统当前日期加以调整作为照片的名称  private String getPhotoFileName() {    Date date = new Date(System.currentTimeMillis());    SimpleDateFormat dateFormat = new SimpleDateFormat("'IMG'_yyyyMMdd_HHmmss");    return dateFormat.format(date) + ".jpg";  }}